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<div class="title">handler.hpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* Copyright (C) </span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * 2019 - yuelei</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * This program is free software; you can redistribute it and/or</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * modify it under the terms of the GNU General Public License</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * as published by the Free Software Foundation; either version 2</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * of the License, or (at your option) any later version.</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * </span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * This program is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * GNU General Public License for more details.</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * </span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * You should have received a copy of the GNU General Public License</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * along with this program; if not, write to the Free Software</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * </span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &quot;server_base.hpp&quot;</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;fstream&gt;</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">using namespace </span><a class="code" href="namespacestd.html">std</a>;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">using namespace </span><a class="code" href="namespacewebX.html">webX</a>;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> SERVER_TYPE&gt;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keywordtype">void</span> start_server(SERVER_TYPE &amp;server){</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="comment">//向服务器增加请求资源的处理方式</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    </div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <span class="comment">//处理访问/string的POST请求，返回POST的字符串</span></div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    server.resource[<span class="stringliteral">&quot;^/string/?$&quot;</span>][<span class="stringliteral">&quot;POST&quot;</span>] = [](ostream &amp; response,<a class="code" href="structwebX_1_1Request.html">Request</a> &amp; request){</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;        <span class="comment">//get string from istream(*request.content);</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        stringstream ss;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        *request.content &gt;&gt; ss.rdbuf();</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        <span class="keywordtype">string</span> content = ss.str();</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        <span class="comment">//直接返请求结果</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        response&lt;&lt;<span class="stringliteral">&quot;HTTP/1.1 200 OK \r\nContent-Length: &quot;</span>&lt;&lt;content.length()&lt;&lt;<span class="stringliteral">&quot;\r\n\r\n&quot;</span>&lt;&lt;content;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    };</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <span class="comment">//proc GET return message of request</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    server.resource[<span class="stringliteral">&quot;^/info/?$&quot;</span>][<span class="stringliteral">&quot;GET&quot;</span>] = [](ostream &amp;response, <a class="code" href="structwebX_1_1Request.html">Request</a> &amp;request){</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        stringstream content_stream;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        content_stream&lt;&lt;<span class="stringliteral">&quot;&lt;h1&gt;Request&lt;/h1&gt;&quot;</span>;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;        content_stream&lt;&lt;request.method&lt;&lt;<span class="stringliteral">&quot; &quot;</span>&lt;&lt;request.path&lt;&lt;<span class="stringliteral">&quot; HTTP/&quot;</span>&lt;&lt;request.http_version&lt;&lt;<span class="stringliteral">&quot;&lt;br&gt;&quot;</span>;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        <span class="keywordflow">for</span> (<span class="keyword">auto</span> &amp;header: request.header){</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;            content_stream&lt;&lt;header.first&lt;&lt;<span class="stringliteral">&quot;:&quot;</span>&lt;&lt;header.second&lt;&lt;<span class="stringliteral">&quot;&lt;br&gt;&quot;</span>;</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        }</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <span class="comment">//获得content_stream的长度</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        content_stream.seekp(0,ios::end);</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        response&lt;&lt;<span class="stringliteral">&quot;HTTP/1.1 200 OK\r\nContent-Length: &quot;</span>&lt;&lt;content_stream.tellp()&lt;&lt;<span class="stringliteral">&quot;\r\n\r\n&quot;</span>&lt;&lt;content_stream.rdbuf();</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    };</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    /处理访问/match/[字母+数字组成的字符串]的GET请求，例如执行请求GET /match/abc123,将返回abc123</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    server.resource[<span class="stringliteral">&quot;^/match/([0-9a-zA-Z]+)/?$&quot;</span>][<span class="stringliteral">&quot;GET&quot;</span>] = [](ostream &amp; response, <a class="code" href="structwebX_1_1Request.html">Request</a> &amp; request){</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;        <span class="keywordtype">string</span> number = request.path_match[1];</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        response&lt;&lt;<span class="stringliteral">&quot;HTTP/1.1 200 OK\r\nContent-Length: &quot;</span>&lt;&lt;number.length()&lt;&lt;<span class="stringliteral">&quot;\r\n&quot;</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;                &lt;&lt;<span class="stringliteral">&quot;Content-type:text/plain&quot;</span>&lt;&lt;<span class="stringliteral">&quot;\r\n&quot;</span>&lt;&lt;<span class="stringliteral">&quot;qwqw:asasa&quot;</span>&lt;&lt;<span class="stringliteral">&quot;\r\n\r\n&quot;</span>&lt;&lt;number;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    };</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="comment">//处理默认GET请求</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    server.default_resource[<span class="stringliteral">&quot;^/?(.*)$&quot;</span>][<span class="stringliteral">&quot;GET&quot;</span>]=[](ostream &amp; response, <a class="code" href="structwebX_1_1Request.html">Request</a> &amp; request){</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keywordtype">string</span> filename = <span class="stringliteral">&quot;web/&quot;</span>;</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keywordtype">string</span> path = request.path_match[1];</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        <span class="comment">//防止使用..来访问web目录外的目录</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="keywordtype">size_t</span> last_pos = path.rfind(<span class="stringliteral">&quot;.&quot;</span>);</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        <span class="keywordtype">size_t</span> current_pos = 0;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        <span class="keywordtype">size_t</span> pos;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <span class="keywordflow">while</span>((pos = path.find(<span class="charliteral">&#39;.&#39;</span>,current_pos))!=string::npos &amp;&amp; pos!= last_pos){</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;            current_pos = pos;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;            path.erase(pos,1);</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;            last_pos--;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        }</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        filename += path;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        ifstream ifs;</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="comment">//简单的平台无关的文件或目录检查</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <span class="keywordflow">if</span>(filename.find(<span class="charliteral">&#39;.&#39;</span>)==string::npos){<span class="comment">//没有查找到.</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;            <span class="keywordflow">if</span>(filename[filename.length()-1]!=<span class="charliteral">&#39;/&#39;</span>){</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                filename += <span class="charliteral">&#39;/&#39;</span>;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;            }</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;            filename += <span class="stringliteral">&quot;index.html&quot;</span>;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        }</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        ifs.open(filename,fstream::in);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <span class="keywordflow">if</span>(ifs){</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;            ifs.seekg(0,ios::end);</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;            <span class="keywordtype">size_t</span> length = ifs.tellg();</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;            ifs.seekg(0,ios::beg);</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;            <span class="comment">//文件拷贝到response_stream中</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;            response&lt;&lt;<span class="stringliteral">&quot;HTTP/1.1 200 OK\r\nContent-Length: &quot;</span>&lt;&lt;length&lt;&lt;<span class="stringliteral">&quot;\r\n\r\n&quot;</span>&lt;&lt;ifs.rdbuf();</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;            ifs.close();</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        }<span class="keywordflow">else</span>{</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;            <span class="comment">//文件不存在</span></div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;            <span class="keywordtype">string</span> content = <span class="stringliteral">&quot;Could not open file &quot;</span>+filename;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            response &lt;&lt;<span class="stringliteral">&quot;HTTP/1.1 400 Bad Request\r\nContent-Length: &quot;</span>&lt;&lt;content.length()&lt;&lt;<span class="stringliteral">&quot;\r\n\r\n&quot;</span>&lt;&lt;content;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        }</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    };</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    </div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    server.start();</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;}</div><div class="ttc" id="namespacestd_html"><div class="ttname"><a href="namespacestd.html">std</a></div></div>
<div class="ttc" id="structwebX_1_1Request_html"><div class="ttname"><a href="structwebX_1_1Request.html">webX::Request</a></div><div class="ttdef"><b>Definition:</b> server_base.hpp:18</div></div>
<div class="ttc" id="namespacewebX_html"><div class="ttname"><a href="namespacewebX.html">webX</a></div><div class="ttdef"><b>Definition:</b> server_base.hpp:17</div></div>
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